Mining machine



C. E. DAVIS.

MINING MACHINE.

APPLICATION FILED MAR. 10. 1915.

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C. E. DAVIS MINING MACHINE.

APPLICATION FILED MAR. I0. IsIs.

Patented Nov. 11, 1919.

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MINING MACHINE. APPLICATION FILED MAR. HM 1915.

1 ,32 1,290. Patented Nov. 11,- 1919.

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APPLICATION FILED MAR. 10. i915.

'1 321,290. PatentedNov. 11, 1919.

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UNITED STATES PATENT OFFICE.

CHARLES E. DAVIS, OF.CI-IICAGOfILLINOIS,ASSIGNORTO GOODMAN MANUFACTURING- COMPAN.Y,OF CHICAGO, ILLINOIS, "A'CORPORAT'ION' OF ILLINOIS.

-MINING-MACHINE.

"Specification of Letters Patent. -PatentedNOV. 11, 1919.

Applicationfiled-filiarch 10, -1915. serial-N 0.. 153311.

To all whom it may concern:

Be it known that I, GHARLES'E.-DAVIS,R citizen of the. United-States, residing at Chicago, in the county of Cook and Stateof lllinoisnhave invented'a certain-new and useful Improvement in Mining-lVIa-chines, of which the followingis a specification.

This invention relates to mining machines and has for its object to provide a new .and improved machine of this-description,particularly adapted to make a substantially straight facecut with a machinehaving a movable connection between the cutting elementand a part upon which it is carr ied.

The invention. is illustrated in the accompanying drawings, 'wherein Figure 1 is a diagrammatic view showing the machine in operation;

Fig. 2 is aplan view with-portions-removed, showing a portion of the operating mechanism Fig. 3 is a side elevation of the construction illustrated in Fig. 2;

Fig. at is a side elevation showing the cut ting element in part section Fig. 5 is a vertical sectional view through the operating mechanism;

Fig. 6 is a sectionalview taken online 66 of Fig. 5;

Fig. 7 is .a planview with. parts broken away, of the rear end of. the machine;

Fig. 8 is a sectional viewtaken on "line 8-8 of Fig. 7; 1

Fig. 9 is a sectional view takenron line 99 of Fig. 8;

Fig. 10 is a view of the indicating :device as seen from line 1010 of-Fig. 7 looking in the direction .of the arrows.

Like numerals refer to like parts throughout the several figures.-

Referring now to the drawings, 1 provide a main truck 1, having wheels 2 adapted to run upon rails 3 so that the truck canbe run into the room of the mineand up to the face of the coal. This truck may be operated in any desired manner, as by means of motors at, said motors-being connected by pinions 5 and 6 with driving. gear 7 on the truck axles.

Mounted upon the truck body is ama-in frame'S arranged to move along said truck body, there being .some suitable means for moving itto any desired point. and then for fastening it to the truck body. As hereframe 8 is provided witha shaft13. .-Figs.-.2'.a-nd 5.) This shaft is providedwith ::a pinion .l-et which engages teeth 15 con inected with. the body of the truck 1. These teeth -l5may be arranged in any desired .manner.

.in shown, .the mainframe 8 has the, clownwardly .progectmgs1de pieces 9 on each-side of the truck :body. Truck body is provided -..with .a series of holes 10 located at-suitable .intervals, and the main frame-8 is fixed to '7' the truck at any one of these points by pins .11 which pass through holes in the side pieces 9 1an'd intothe holes 10 in the; truck body. (See Figs. v3, 4 and 6.)

The .main frame 8 is fixed against lateral motion and is provided with teeth 12. The (See As herein shown, the truck body is pro- VlClQClWltll Ia slot 16 and the teeth are ar-' By ro- This manner.

.As-herein shown, the shaft 13 is provided with a ;gear 17-which is connected by gears 18 and 19 with a pinion 20 on the shaft 2-1, saidshaft being operatively connected with --a suitable motor. The gears 18 and 19 are mounted onthe movable arm 22. This arm is pivotally connected at one end to the frame 8 in any desired manner. As shown in- Fig. 5 thisarm22 has an'opening through which passes the shaft 13 and it, is clamped to the movable piece 28 which is rotatably rmountedin the *frame 8,-the bearing face being shown at24t. The other end of the .arm 22 is'rotatably connected with a movlngframe 25, the connection in this case be ing made by the shaft 2-1 and the sleeve 26, said shaft andsleevc projecting through an opening in --saidarm. The arm 22 is also provided -with an upwardly projecting sleeve :27 which surrounds the sleeve 26. The sleeve 26 .has connected to it at its lower end. awgearz28, the teeth of which mesh with: the teeth112 on" the. main frame 8, the

partsarranged so that Whenthe gear 128 is rotated, the movlng frame 25 will be moved.

The:arm,22= holds the moving'frame in such position as to keep the teeth 12 and the teeth of the gear 28 in mesh during the various positions of the moving frame 25. The moving frame 25 is provided at its front end with the two guiding faces 29 and 30. These guiding faces in the construction shown are formed by providing the frame with a slot 31. Located between these guiding faces is a pivot pin 32 having an enlarged end at the top which projects beyond the guiding faces 29 and 30 so as to prevent the pivot pin from passing through the slot 31. This pivot pin is connected with the main frame 8 in any desired manner as by means of the threaded end 33.

The shaft 21 is provided at its upper end with a worm wheel 3st which engages a worm 35 on a shaft 36. The worm wheel is loosely mounted on the shaft 21 and is operatively connected therewith by means of the clutch 37 controlled by the handle 38. The shaft 36 is connected with the motor 39, and it will be seen that when this shaft is rotated and the clutch 3? moved to connect the worm wheel 3i with the shaft 21, said shaft will be rotated so as to drive the pinion 20 and the gears 19, 1S and 17, shaft 13 and pinion 14:. The pinion will then move along the teeth 15 and move the main frame along the truck 1.

The sleeve 26 has connected to it at its upper end the worm wheel i0 connected with the worm $1 on the shaft 42 which is also connected with the motor 39. It will be seen that when the shaft i2 is rotated the sleeve will be rotated and the gear 28 will also be rotated and this rotation ill cause the moving frame to be moved with relation to the main frame 8. The moving frame 25 has an upwardly projecting sleeve 43 upon which is mounted a sleeve at; carrying at its upper end a worm wheel as which engages a worm 46 on the shaft i7, which is also connected with the motor 39. At the lower end of the sleeve fl is a drum l8, upon which may be wound a flexible power transmitting device such as a cable 86 The moving frame 25 is also provided with a series of idle direction changing pulleys -l9 arranged so that this cable may be passed around one or more of them and fastened to a fixed point 8? outside the boundaries of the machine. The shaft of the motor 39 is provided with a gear 50, which engages a gear 51 on a shaft (See Fig. 7.) This shaft is also provided with a gear 53 which engages a gear 5% on a short shaft This short shaft is provided with a gear 56 which engages a gear 57 mounted on a sleeve 58 on the shaft e7. A clutch member v59 is slidably connected with the sleeve 58 and is provided with a controlling lever 60. There is a cooperating clutch member 61 connected with the shaft 47. It will be seen that when the clutch member 59 engages the clutch member 61, the shaft a? will be operatively connected with the gear 57 and hence with the motor. There is a gear 62 rotatably mounted upon the sleeve 58, one end of the gear forming a clutch member There is a second sliding clutch member 6 1 on the sleeve 58 controlled by the lever 65. When this clutch member is moved to engage the clutch member 63 the gear 62 is connected with the sleeve 58 and hence with the motor. This gear 62 meshes with the gear 66 on the shaft l2 so that said latter shaft is driven when the clutch member 6-]: is moved to its closed position. The gear 66 is loosely mounted on the shaft s2 and is provided with a clutch member 66 There is a sliding clutch member 66 on the shaft 42. When the two clutch members engage the gear 66 is connected with the shaft T2 and drives it. When they are disengaged, the gear 66 rotates free of the shaft l2. This gear meshes with a gear 67 connected with shaft 36, and hence when the clutch member 6st is inits closed position and the clutch member 66 is in its open position, the shaft 36 will be connected with the motor and driven thereby, while the shafts i2 and 47 will be disconnected from the motor. The shaft 36 drives the shaft 21 (see Fig. 5), which is the driving shaft for driving the pinion 1 t meshing with the teeth 15 on the truck 1. The shaft 42 drives the gear 28 which meshes with the teeth 12 on the main frame 8. The shaft i7 drives the drum i8.

Mounted upon the moving frame 25 is a cutting element 68. (See Fig. at.) This cutting element is arranged so that it may be moved up or down with relation to the frame 25. As herein shown, this cutting element is mounted between supports 69 attached to said frame said supports being provided with teeth 70. The cutting element is providcdwith gears 71 (see Fig. 2) which engage the teeth 70 so that when said gears are rotated the cutting elementmay be moved up or down. The cutting element is provided with a cutter arm 7 which projects into the coal as shown in Fig. 1. This cutter may be of any desired form. I prefer to use a cutter arm having a cutter chain with knives thereon, the chain being moved about the cutter arm. Some means is provided for driving this cutter chain and for moving the cutting element up and down between the guides.

As herein shown, a motor 7 3 is mounted on the cutting element (see Fig. 4), said motor being connected with a sprocket wheel 7?, about which the cutter chain passes, the sprocket wheel driving said cutter chain in the usual manner. The motor is connected with the gears 71 by means of the bevel gears 7 6 and the bevel gears 77 and associated parts. One of the bevel gears 7 7 has a friction clutch member 78 adapted to cooperate with a friction clutch member 79 sliding on the shaft 80. This latter clutch member is controlled by the lever 81. The shaft-.80 is. provided with a worm 82 which engages a worm gear 83 on the shaft 84. The shaft 84 is provided at its, opposite ends with: theworms85 which engage the worm wheels-85 on the shafts 85 The shafts 85 carry thegears'i' 1 which engage the teeth 70 on the support 69. It will be seen that when these gears are rotated the cutting element may be moved up and down between the support 69. I am not claiming this construction in the present application as it is illustrated and claimed in 'a prior application heretofore filed by me. The cable 86 whiclrpassesiaround the drum 48 may be connected to a fixed part 87 (see Fig. 1) when the machine is making its entering or withdrawing cut so as to force the cuttei arm into the coal or withdraw it from the coal when it is in the position shown in Fig. 1. This cable is only used in the event the other apparatus for. this purpose is injured or not properly working,

Since .the end of the cutter arm 72 projects into the coal and is out of view, and the arm is inclined at an angle as 1t approaches the end of its cut, as shown in Fig. 1, it is often desirable to know the position of. the end of said arm so that a cut of any desired length can be secured by withdrawing the arm when it reaches a certain known position. This result is secured by means of an indicator 86. (See Figs. 8 and 10.) This indicator is connected with the shaft 42 .which drives the parts controlling the movement of the moving frame 25.- Said shaft is provided with a worm 87 which engages a worm gear 88. This worm gear has connected therewith a pointer 89 which moves about a dial 90 provided with a series of figures which represent feet or any other lineal dimension.

. The indicating device illustrated in Figs.

8 and 10 is for a machine having a cut of 18 feet, that'is a machine which cuts 9 feet on each side of the center line. This center line is the center line of action of the machine and is a line in the vertical longitudinal plane on each side of which the cutter arm swings in its cutting operation and in the particular form of machine illustrated in the drawings, said center line is in the vertical plane of the center line of the track along which the machine moves.

The central number on the disk is zero and the numbers run on each side of zero up to 9 as indicated. I have shown the first figure on each side of zero as the figure 1, simply. for clearness. It will be understood, however, that since the cutter arm has a certain width this figure in practice would not be 1. If, for example, the width of the cutter arm should be 2 feet,

srecording ofrtwo feet. .Whemthe pointer is at. zerothe cutter .arm ism ltswcentral position and as 1t moves on either side of its central position the pointer moves along the dial and the :figure;there0n which is opposite the pointer. indicates the; numberof feet fromthe centerto the endof the cutter arm measured along the face of the coal. It will be seen that by means of this device, if it is desired tomakeacut of any :desired length,

it is only necessary to operate-the machine ;until the pointer '89 comes opposite the figure 1 representing the .distance ;from the center line which itis desired to cut,- whereupon the lateral movement of the-.armzmay be stopped and the arm withdrawn so as to finish the cut.

In theoperation of the device the entire machine is moved along the trackinto position, the frame 8 is moved along, the truck 1, and theframe25 is moved about its pivotal point, that is, to an angular position,

until the end of the cutterarm is in proximity to the face of the coalat thepoint where -it is desired tomakethe cut. ,;The .-9 cutter arm is then forced into the coal the proper distance by operating the motor 39so as to rotate the pinion 14, which engages the: teeth 15 of the rack on thetruck. lVhen the cutter arm has been forced into the coal a sufficient distance, the pinion 14 is disconnected from the-motor by moving the clutch lever. 38,andthe frame 8 is fastened to the, truck by means of the pins 11. The frame isthen moved. on the frame 8 by connecting the motor 39 withthe gear 28 by means of the clutch member 66 This movement is continued until the'frame 25 and the cutter arm reach the position shown in Fig. 1, whereupon the motor '39 is stopped and the pins 11- removed. The pinion 14 is then rotated in the opposite direction and moved along the teeth of the rack 15 so as to withdraw the cutter arm from the coal and make the finishing cut, the cutter chain being in operation all this time. The drum 48 and the flexible cable are not really necessaryin this device and are only used in case something should go wrong with the motors of the truck. that event the cable isattached to afixed point ahead of the machine and is operated .by the motor 39 so as to makethe initial be varied in many particulars without departing from the spirit of the invention; and I therefore do not limit myself to the particular construction shown.

In Fig. 1 the cable 86 is shown as attached to a fixed part 8? outside of the machine. This cable, instead of being so attached, may be attached to a hook or other fastening part 87 attached to the truck. I have shown the parts 8'7 both at the front and at the rear of the truck. (See Fig. 2). When the cable is attached to the parts 87 it will be seen that only relative movement between the truck and the main frame can be produced by rotating the drum. When the cable is attached to the part 8'7 outside of the machine it will be seen that this relative movement may be produced or the entire machine may be moved bodily along the track.

I claim:

l. A mining machine comprising a support, a main frame slidably mounted thereon, actuating mechanism connecting the support and the main frame for moving the main frame longitudinally along the support, a moving frame mounted upon the main frame, said moving frame having a pivotal connection with said support, a separate pivotal connection connecting said moving frame with said main frame, means for moving said moving frame laterally and longitudinally with relation to said main frame and a cutting element mounted upon said moving frame, said cutting element having a cutter arm which projects into the coal when the machine is in operation.

2. A mining machine comprising a truck, a main frame slidably mounted thereon, an operative connection between the main frame and the truck, whereby the main frame may be moved along the truck, a moving frame mounted upon the main frame, having a pivotal connection with the truck and a separate pivotal connection with the main frame, means for moving said moving frame laterally and longitudinally witl relation to said main frame, and a cutting element mounted upon said moving frame.

'3. A mining machine comprising a truck, a main frame adjustably mounted thereon, a driving connection between the main frame and the truck whereby the main frame may be moved along the truck, means for fastening said main frame to said truck when it is in a pre-determined position. a moving frame mounted upon said main frame and movable with relation thereto, said moving frame having a pivotal connection with the truck and a separate pivotal connection with the main frame, means for moving said moving frame laterally and longitudinally with relation to the main frame and the truck, and a cutting element mounted upon said moving frame, and a cutter arm connected with said cutting element, said cutter arm moved along the material to be cut by the movement of said moving frame,

i. A mining machine comprising a support, a rack connected with said support, a main frame movably mounted upon said support, a pinion connected with said main frame and engaging said rack, means for driving said pinion to move the main frame along the support, a moving frame mounted upon the main frame, a pivot connected with the main frame and having a movable connection with' the moving frame, guides on the moving frame between which the pivot is confined, an arm movably connected with the main, frame and pivotally connected with the moving frame, a pinion mounted on said arm, a rack on the main frame, with which said pinion engages, and a cutting element mounted on said moving frame.

A mining machine comprising a truck, a main frame slidably mounted on said truck so as to be free to slide thcrealong, means for preventing lateral movement of said main frame with relation to said truck, a moving frame mounted on the main frame, said moving frame having a pivotal connection with the truck and a separate pivotal connection with the main frame, a cutting element mounted on the moving frame, a cutter arm projecting from said cutting element, means for moving the moving frame laterally and longitudinally with relation to the main frame to move the cutting element, and means for moving the main frame, moving frame and cutting element back and forth on said truck.

6. A mining machine comprising a truck, a main frame mounted upon said truck, a moving frame mounted upon the main frame, a cutting element mounted upon the moving frame, said moving frame having a pivotal connection with the truck and a separate pivotal. connection with the main frame, a cutter arm projecting from said cutting element, means for moving the main frame and the moving frame along said truck, and independent means for moving said moving frame longitudinally with relation to its point of connection with said main frame so as to actuate said cutter arnn 7. A mining machine comprising a truck, a main frame mounted upon said truck and free to move back and forth there-along, fastening means for fastening the main frame to the truck at different points therea-long, a moving frame mounted on the main frame, said moving frame having a pivotal connection with the truck and a separate pivotal connection with the main frame, a cutting element mounted on the moving frame, a cutter arm projecting from said cutting element, and means for moving the moving frame with relation to said rocking connection.

8. A mining machine comprising a support, a main frame mounted upon said support, a rack and pinion connection between the main frame and support by which the main frame may be moved along the support, a moving frame mounted on the main frame, a cutting element mounted on the moving frame, a motor mounted on the moving frame, an operative connection between said motor and the pinion of said rack and pinion connection between the main frame and the support, a rack and pinion connection between the main frame and the moving frame, and an operative connection between said motor and the pinion of said rack and pinion connection and a sliding pivotal connection between the moving frame and the main frame.

9. A mining machine comprising a truck, a rack connected with said truck, a pinion engaging said rack, a shaft for said pinion, a main frame with which said shaft is connected, an arm having one end connected with said shaft, a movable frame, a projecting part on one of said frames and a sliding connection between said projecting part and the other frame, a shaft connecting said movable frame and said arm, a pinion on said shaft, an operative connection between said pinion and the pinion engaging the rack on the truck, a curved rack on the main frame, a pinion connected with said arm and engaging said curved rack, a motor for driving said pinions, and a cutting element upon said moving frame.

10. A mining machine comprising a main frame, a moving frame mounted thereon, a

cutting element on the moving frame having a projecting cutter arm which projects into the material to be cut, operating mechanism for-"moving the cutter arm to an angular position at one side of a predetermined vertical plan through said machine and means for indicating the distance of the end of the cutter arm from said predetermined vertical cutter plane, said means being self-contained and mounted upon and moving with said moving frame.

11. A mining machine comprising a main frame, a moving frame mounted thereon, a cutting element on the moving frame having a projecting cutter arm which projects into the material to be cut, operating mechanism for moving the cutter arm to an angular position at one side of a predetermined vertical plane through said machine, and selfcontained means actuated by the relative movement of the main frame and the movable frame for indicating the distance of the end of the cutter arm from said predetermlined vertical plane, said self-contained means comprising a pointer operatively connected with a moving part of the machine, and a scale along which said pointer moves, said pointer indicating on said scale the distance of the end of the cutter arm from said predetermined vertical plane when the pointer is opposite a given figure on the scale.

In testimony whereof, I affix my signature in the presence of two witnesses this 24th day of February, 1915 CHARLES E. DAVIS.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

